It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 165 502 is not a prime number.
For example, 165 502 can be divided by 2: 165 502 / 2 = 82 751.
For 165 502 to be a prime number, it would have been required that 165 502 has only two divisors, i.e., itself and 1.
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165 502 is an even number, because it is evenly divisible by 2: 165 502 / 2 = 82 751.
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A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 165 502 is about 406.819.
Thus, the square root of 165 502 is not an integer, and therefore 165 502 is not a square number.
The square of a number (here 165 502) is the result of the product of this number (165 502) by itself (i.e., 165 502 × 165 502); the square of 165 502 is sometimes called "raising 165 502 to the power 2", or "165 502 squared".
The square of 165 502 is 27 390 912 004 because 165 502 × 165 502 = 165 5022 = 27 390 912 004.
As a consequence, 165 502 is the square root of 27 390 912 004.
The multiples of 165 502 are all integers evenly divisible by 165 502, that is all numbers such that the remainder of the division by 165 502 is zero. There are infinitely many multiples of 165 502. The smallest multiples of 165 502 are: